A homeowner built this, not a tax firm.

In 2026 I protested my own Harris County property taxes. What I found out is that the data you need to win is free, public, and sitting right on the county appraisal district's own website. The catch is that it's buried in complexity, and most homeowners never realize they can pull comparable sales and challenge their assessment themselves.

The appeal firms know this. That's their whole business: they do something you could do, and they keep 25 to 50 percent of your savings every single year for it. I didn't think that was fair, so I built the tool I wished I'd had. You enter your address, it pulls real comparable properties from your county's appraisal roll, and it tells you in 30 seconds whether you're over-assessed and by how much. If you want help filing, the full pre-filled protest kit is a flat $49, one time, ready to sign and file, and you keep every dollar you save.

Every figure on this site comes from public county appraisal and assessment records, the same rolls and tax lists the counties use to set your tax. Texas has our deepest per-parcel data today, and we are expanding that depth state by state. When the calculator says your home looks over-assessed, it's comparing your assessed value to recent sales and assessments of genuinely comparable homes in your neighborhood, adjusted for size, age, and condition.

Every comparable in your kit is a real, checkable parcel. You can look up each one on your own county's website and confirm it yourself. I don't use made-up estimates or fake testimonials. If you're not over-assessed I'll say so straight, and the same comp data becomes your Valuation Report instead: PMI cancellation evidence, refinance support, or list pricing. You can read more about that approach on the honest pricing page or see the underlying data in the press and methodology section.

The same rule governs the legal dates. Our appeal deadline calendar for all 50 states and DC cites a state revenue department, an official form, or statute text on the legislature's own site for every single date, and shows the day each one was last checked. Where a state has no statewide deadline, which is most of them, it says so instead of printing a confident number that would cost someone their appeal.